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https://github.com/rvtr/GodMode9i.git
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584 lines
19 KiB
C
584 lines
19 KiB
C
/*
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NitroHax -- Cheat tool for the Nintendo DS
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Copyright (C) 2008 Michael "Chishm" Chisholm
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "read_card.h"
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#include <nds.h>
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#include <nds/arm9/cache.h>
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#include <nds/dma.h>
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#include <nds/card.h>
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#include <string.h>
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#include "encryption.h"
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#include "tonccpy.h"
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enum {
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ERR_NONE = 0x00,
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ERR_STS_CLR_MEM = 0x01,
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ERR_STS_LOAD_BIN = 0x02,
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ERR_STS_HOOK_BIN = 0x03,
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ERR_STS_START = 0x04,
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// initCard error codes:
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ERR_LOAD_NORM = 0x11,
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ERR_LOAD_OTHR = 0x12,
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ERR_SEC_NORM = 0x13,
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ERR_SEC_OTHR = 0x14,
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ERR_LOGO_CRC = 0x15,
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ERR_HEAD_CRC = 0x16,
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} ERROR_CODES;
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// NAND Card commands
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// https://problemkaputt.de/gbatek-ds-cartridge-nand.htm
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#define CARD_CMD_NAND_WRITE_BUFFER 0x81
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#define CARD_CMD_NAND_COMMIT_BUFFER 0x82
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#define CARD_CMD_NAND_DISCARD_BUFFER 0x84
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#define CARD_CMD_NAND_WRITE_ENABLE 0x85
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#define CARD_CMD_NAND_ROM_MODE 0x8B
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#define CARD_CMD_NAND_RW_MODE 0xB2
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#define CARD_CMD_NAND_READ_STATUS 0xD6
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#define CARD_CMD_NAND_UNKNOWN 0xBB
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#define CARD_CMD_NAND_READ_ID 0x94
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typedef union
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{
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char title[4];
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u32 key;
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} GameCode;
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static bool twlBlowfish = false;
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static bool normalChip = false; // As defined by GBAtek, normal chip secure area is accessed in blocks of 0x200, other chip in blocks of 0x1000
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static u32 portFlags = 0;
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static u32 headerData[0x1000/sizeof(u32)] = {0};
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static u32 secureArea[CARD_SECURE_AREA_SIZE/sizeof(u32)] = {0};
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static bool nandChip = false;
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static int nandSection = -1; // -1 = ROM, above that is the current 128 KiB section in RW
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u32 cardNandRomEnd = 0;
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u32 cardNandRwStart = 0;
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static const u8 cardSeedBytes[] = {0xE8, 0x4D, 0x5A, 0xB1, 0x17, 0x8F, 0x99, 0xD5};
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static u32 getRandomNumber(void) {
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return rand();
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}
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//---------------------------------------------------------------------------------
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// https://github.com/devkitPro/libnds/blob/105d4943dbac8f2bd99a47b22cd3ed48f96af083/source/common/card.c#L47-L62
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// but modified to write if CARD_WR is set.
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static void cardPolledTransferWrite(u32 flags, u32 *buffer, u32 length, const u8 *command) {
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//---------------------------------------------------------------------------------
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cardWriteCommand(command);
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REG_ROMCTRL = flags | CARD_BUSY;
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u32 * target = buffer + length;
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do {
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// Read/write data if available
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if (REG_ROMCTRL & CARD_DATA_READY) {
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if (flags & CARD_WR) { // Write
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if (NULL != buffer && buffer < target)
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REG_CARD_DATA_RD = *buffer++;
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else
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REG_CARD_DATA_RD = 0;
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} else { // Read
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u32 data = REG_CARD_DATA_RD;
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if (NULL != buffer && buffer < target)
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*buffer++ = REG_CARD_DATA_RD;
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else
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(void)data;
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}
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}
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} while (REG_ROMCTRL & CARD_BUSY);
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}
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static void decryptSecureArea (u32 gameCode, u32* secureArea, int iCardDevice)
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{
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init_keycode (gameCode, 2, 8, iCardDevice);
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crypt_64bit_down (secureArea);
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init_keycode (gameCode, 3, 8, iCardDevice);
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for (int i = 0; i < 0x200; i+= 2) {
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crypt_64bit_down (secureArea + i);
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}
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}
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static struct {
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unsigned int iii;
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unsigned int jjj;
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unsigned int kkkkk;
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unsigned int llll;
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unsigned int mmm;
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unsigned int nnn;
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} key1data;
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static void initKey1Encryption (u8* cmdData, int iCardDevice) {
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key1data.iii = getRandomNumber() & 0x00000fff;
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key1data.jjj = getRandomNumber() & 0x00000fff;
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key1data.kkkkk = getRandomNumber() & 0x000fffff;
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key1data.llll = getRandomNumber() & 0x0000ffff;
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key1data.mmm = getRandomNumber() & 0x00000fff;
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key1data.nnn = getRandomNumber() & 0x00000fff;
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if(iCardDevice) //DSi
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cmdData[7]=0x3D; // CARD_CMD_ACTIVATE_BF2
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else
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cmdData[7]=CARD_CMD_ACTIVATE_BF;
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cmdData[6] = (u8) (key1data.iii >> 4);
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cmdData[5] = (u8) ((key1data.iii << 4) | (key1data.jjj >> 8));
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cmdData[4] = (u8) key1data.jjj;
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cmdData[3] = (u8) (key1data.kkkkk >> 16);
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cmdData[2] = (u8) (key1data.kkkkk >> 8);
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cmdData[1] = (u8) key1data.kkkkk;
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cmdData[0] = (u8) getRandomNumber();
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}
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// Note: cmdData must be aligned on a word boundary
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static void createEncryptedCommand (u8 command, u8* cmdData, u32 block)
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{
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unsigned long iii, jjj;
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if (command != CARD_CMD_SECURE_READ) {
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block = key1data.llll;
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}
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if (command == CARD_CMD_ACTIVATE_SEC) {
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iii = key1data.mmm;
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jjj = key1data.nnn;
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} else {
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iii = key1data.iii;
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jjj = key1data.jjj;
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}
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cmdData[7] = (u8) (command | (block >> 12));
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cmdData[6] = (u8) (block >> 4);
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cmdData[5] = (u8) ((block << 4) | (iii >> 8));
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cmdData[4] = (u8) iii;
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cmdData[3] = (u8) (jjj >> 4);
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cmdData[2] = (u8) ((jjj << 4) | (key1data.kkkkk >> 16));
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cmdData[1] = (u8) (key1data.kkkkk >> 8);
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cmdData[0] = (u8) key1data.kkkkk;
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crypt_64bit_up ((u32*)cmdData);
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key1data.kkkkk += 1;
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}
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static void cardDelay (u16 readTimeout) {
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/* Using a while loop to check the timeout,
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so we have to wait until one before overflow.
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This also requires an extra 1 for the timer data.
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See GBATek for the normal formula used for card timeout.
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*/
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TIMER_DATA(0) = 0 - (((readTimeout & 0x3FFF) + 3));
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TIMER_CR(0) = TIMER_DIV_256 | TIMER_ENABLE;
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while (TIMER_DATA(0) != 0xFFFF);
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// Clear out the timer registers
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TIMER_CR(0) = 0;
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TIMER_DATA(0) = 0;
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}
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static void switchToTwlBlowfish(sNDSHeaderExt* ndsHeader) {
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if (twlBlowfish || ndsHeader->unitCode == 0) return;
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// Used for dumping the DSi arm9i/7i binaries
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u32 portFlagsKey1, portFlagsSecRead;
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int secureBlockNumber;
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int i;
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u8 cmdData[8] __attribute__ ((aligned));
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GameCode* gameCode;
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if (isDSiMode()) {
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// Reset card slot
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disableSlot1();
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for(int i = 0; i < 25; i++) { swiWaitForVBlank(); }
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enableSlot1();
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for(int i = 0; i < 15; i++) { swiWaitForVBlank(); }
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// Dummy command sent after card reset
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cardParamCommand (CARD_CMD_DUMMY, 0,
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CARD_ACTIVATE | CARD_nRESET | CARD_CLK_SLOW | CARD_BLK_SIZE(1) | CARD_DELAY1(0x1FFF) | CARD_DELAY2(0x3F),
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NULL, 0);
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} else {
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REG_ROMCTRL=0;
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REG_AUXSPICNT=0;
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//ioDelay2(167550);
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for(i = 0; i < 25; i++) { swiWaitForVBlank(); }
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REG_AUXSPICNT=CARD_CR1_ENABLE|CARD_CR1_IRQ;
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REG_ROMCTRL=CARD_nRESET|CARD_SEC_SEED;
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while(REG_ROMCTRL&CARD_BUSY) ;
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cardReset();
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while(REG_ROMCTRL&CARD_BUSY) ;
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}
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//int iCardDevice = 1;
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// Initialise blowfish encryption for KEY1 commands and decrypting the secure area
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gameCode = (GameCode*)ndsHeader->gameCode;
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init_keycode (gameCode->key, 1, 8, 1);
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// Port 40001A4h setting for normal reads (command B7)
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portFlags = ndsHeader->cardControl13 & ~CARD_BLK_SIZE(7);
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// Port 40001A4h setting for KEY1 commands (usually 001808F8h)
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portFlagsKey1 = CARD_ACTIVATE | CARD_nRESET | (ndsHeader->cardControl13 & (CARD_WR|CARD_CLK_SLOW)) |
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((ndsHeader->cardControlBF & (CARD_CLK_SLOW|CARD_DELAY1(0x1FFF))) + ((ndsHeader->cardControlBF & CARD_DELAY2(0x3F)) >> 16));
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// Adjust card transfer method depending on the most significant bit of the chip ID
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if (!normalChip) {
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portFlagsKey1 |= CARD_SEC_LARGE;
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}
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// 3Ciiijjj xkkkkkxx - Activate KEY1 Encryption Mode
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initKey1Encryption (cmdData, 1);
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cardPolledTransfer((ndsHeader->cardControl13 & (CARD_WR|CARD_nRESET|CARD_CLK_SLOW)) | CARD_ACTIVATE, NULL, 0, cmdData);
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// 4llllmmm nnnkkkkk - Activate KEY2 Encryption Mode
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createEncryptedCommand (CARD_CMD_ACTIVATE_SEC, cmdData, 0);
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if (normalChip) {
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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cardDelay(ndsHeader->readTimeout);
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}
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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// Set the KEY2 encryption registers
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REG_ROMCTRL = 0;
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REG_CARD_1B0 = cardSeedBytes[ndsHeader->deviceType & 0x07] | (key1data.nnn << 15) | (key1data.mmm << 27) | 0x6000;
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REG_CARD_1B4 = 0x879b9b05;
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REG_CARD_1B8 = key1data.mmm >> 5;
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REG_CARD_1BA = 0x5c;
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REG_ROMCTRL = CARD_nRESET | CARD_SEC_SEED | CARD_SEC_EN | CARD_SEC_DAT;
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// Update the DS card flags to suit KEY2 encryption
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portFlagsKey1 |= CARD_SEC_EN | CARD_SEC_DAT;
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// 1lllliii jjjkkkkk - 2nd Get ROM Chip ID / Get KEY2 Stream
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createEncryptedCommand (CARD_CMD_SECURE_CHIPID, cmdData, 0);
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if (normalChip) {
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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cardDelay(ndsHeader->readTimeout);
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}
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cardPolledTransfer(portFlagsKey1 | CARD_BLK_SIZE(7), NULL, 0, cmdData);
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// 2bbbbiii jjjkkkkk - Get Secure Area Block
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portFlagsSecRead = (ndsHeader->cardControlBF & (CARD_CLK_SLOW|CARD_DELAY1(0x1FFF)|CARD_DELAY2(0x3F)))
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| CARD_ACTIVATE | CARD_nRESET | CARD_SEC_EN | CARD_SEC_DAT;
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int secureAreaOffset = 0;
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for (secureBlockNumber = 4; secureBlockNumber < 8; secureBlockNumber++) {
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createEncryptedCommand (CARD_CMD_SECURE_READ, cmdData, secureBlockNumber);
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if (normalChip) {
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cardPolledTransfer(portFlagsSecRead, NULL, 0, cmdData);
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cardDelay(ndsHeader->readTimeout);
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for (i = 8; i > 0; i--) {
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cardPolledTransfer(portFlagsSecRead | CARD_BLK_SIZE(1), secureArea + secureAreaOffset, 0x200, cmdData);
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secureAreaOffset += 0x200/sizeof(u32);
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}
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} else {
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cardPolledTransfer(portFlagsSecRead | CARD_BLK_SIZE(4) | CARD_SEC_LARGE, secureArea + secureAreaOffset, 0x1000, cmdData);
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secureAreaOffset += 0x1000/sizeof(u32);
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}
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}
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// Alllliii jjjkkkkk - Enter Main Data Mode
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createEncryptedCommand (CARD_CMD_DATA_MODE, cmdData, 0);
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if (normalChip) {
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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cardDelay(ndsHeader->readTimeout);
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}
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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// The 0x800 bytes are modcrypted, so this function isn't ran
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//decryptSecureArea (gameCode->key, secureArea, 1);
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twlBlowfish = true;
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}
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int cardInit (sNDSHeaderExt* ndsHeader)
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{
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u32 portFlagsKey1, portFlagsSecRead;
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normalChip = false; // As defined by GBAtek, normal chip secure area and header are accessed in blocks of 0x200, other chip in blocks of 0x1000
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nandChip = false;
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nandSection = -1;
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int secureBlockNumber;
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int i;
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u8 cmdData[8] __attribute__ ((aligned));
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GameCode* gameCode;
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twlBlowfish = false;
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sysSetCardOwner (BUS_OWNER_ARM9); // Allow arm9 to access NDS cart
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if (isDSiMode()) {
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// Reset card slot
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disableSlot1();
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for(i = 0; i < 25; i++) { swiWaitForVBlank(); }
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enableSlot1();
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for(i = 0; i < 15; i++) { swiWaitForVBlank(); }
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// Dummy command sent after card reset
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cardParamCommand (CARD_CMD_DUMMY, 0,
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CARD_ACTIVATE | CARD_nRESET | CARD_CLK_SLOW | CARD_BLK_SIZE(1) | CARD_DELAY1(0x1FFF) | CARD_DELAY2(0x3F),
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NULL, 0);
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}
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REG_ROMCTRL=0;
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REG_AUXSPICNT=0;
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//ioDelay2(167550);
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for(i = 0; i < 25; i++) { swiWaitForVBlank(); }
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REG_AUXSPICNT=CARD_CR1_ENABLE|CARD_CR1_IRQ;
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REG_ROMCTRL=CARD_nRESET|CARD_SEC_SEED;
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while(REG_ROMCTRL&CARD_BUSY) ;
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cardReset();
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while(REG_ROMCTRL&CARD_BUSY) ;
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toncset(headerData, 0, 0x1000);
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u32 iCardId=cardReadID(CARD_CLK_SLOW);
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while(REG_ROMCTRL & CARD_BUSY);
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normalChip = (iCardId & BIT(31)) != 0; // ROM chip ID MSB
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nandChip = (iCardId & BIT(27)) != 0; // Card has a NAND chip
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// Read the header
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cardParamCommand (CARD_CMD_HEADER_READ, 0,
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CARD_ACTIVATE | CARD_nRESET | CARD_CLK_SLOW | CARD_BLK_SIZE(1) | CARD_DELAY1(0x1FFF) | CARD_DELAY2(0x3F),
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(void*)headerData, 0x200/sizeof(u32));
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tonccpy(ndsHeader, headerData, 0x200);
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if ((ndsHeader->unitCode != 0) || (ndsHeader->dsi_flags != 0))
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{
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// Extended header found
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if(normalChip) {
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for(int i = 0; i < 8; i++) {
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cardParamCommand (CARD_CMD_HEADER_READ, i * 0x200,
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CARD_ACTIVATE | CARD_nRESET | CARD_CLK_SLOW | CARD_BLK_SIZE(1) | CARD_DELAY1(0x1FFF) | CARD_DELAY2(0x3F),
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headerData + i * 0x200 / sizeof(u32), 0x200/sizeof(u32));
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}
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} else {
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cardParamCommand (CARD_CMD_HEADER_READ, 0,
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CARD_ACTIVATE | CARD_nRESET | CARD_CLK_SLOW | CARD_BLK_SIZE(4) | CARD_DELAY1(0x1FFF) | CARD_DELAY2(0x3F),
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(void*)headerData, 0x1000/sizeof(u32));
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}
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if (ndsHeader->dsi1[0]==0xFFFFFFFF && ndsHeader->dsi1[1]==0xFFFFFFFF
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&& ndsHeader->dsi1[2]==0xFFFFFFFF && ndsHeader->dsi1[3]==0xFFFFFFFF)
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{
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toncset((u8*)headerData+0x200, 0, 0xE00); // Clear out FFs
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}
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tonccpy(ndsHeader, headerData, sizeof(sNDSHeaderExt));
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}
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// Check header CRC
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if (ndsHeader->headerCRC16 != swiCRC16(0xFFFF, (void*)ndsHeader, 0x15E)) {
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return ERR_HEAD_CRC;
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}
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/*
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// Check logo CRC
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if (ndsHeader->logoCRC16 != 0xCF56) {
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return ERR_LOGO_CRC;
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}
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*/
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// Initialise blowfish encryption for KEY1 commands and decrypting the secure area
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gameCode = (GameCode*)ndsHeader->gameCode;
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init_keycode (gameCode->key, 2, 8, 0);
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// Port 40001A4h setting for normal reads (command B7)
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portFlags = ndsHeader->cardControl13 & ~CARD_BLK_SIZE(7);
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// Port 40001A4h setting for KEY1 commands (usually 001808F8h)
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portFlagsKey1 = CARD_ACTIVATE | CARD_nRESET | (ndsHeader->cardControl13 & (CARD_WR|CARD_CLK_SLOW)) |
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((ndsHeader->cardControlBF & (CARD_CLK_SLOW|CARD_DELAY1(0x1FFF))) + ((ndsHeader->cardControlBF & CARD_DELAY2(0x3F)) >> 16));
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// Adjust card transfer method depending on the most significant bit of the chip ID
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if (!normalChip) {
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portFlagsKey1 |= CARD_SEC_LARGE;
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}
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// 3Ciiijjj xkkkkkxx - Activate KEY1 Encryption Mode
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initKey1Encryption (cmdData, 0);
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cardPolledTransfer((ndsHeader->cardControl13 & (CARD_WR|CARD_nRESET|CARD_CLK_SLOW)) | CARD_ACTIVATE, NULL, 0, cmdData);
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// 4llllmmm nnnkkkkk - Activate KEY2 Encryption Mode
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createEncryptedCommand (CARD_CMD_ACTIVATE_SEC, cmdData, 0);
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if (normalChip) {
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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cardDelay(ndsHeader->readTimeout);
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}
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cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
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|
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// Set the KEY2 encryption registers
|
|
REG_ROMCTRL = 0;
|
|
REG_CARD_1B0 = cardSeedBytes[ndsHeader->deviceType & 0x07] | (key1data.nnn << 15) | (key1data.mmm << 27) | 0x6000;
|
|
REG_CARD_1B4 = 0x879b9b05;
|
|
REG_CARD_1B8 = key1data.mmm >> 5;
|
|
REG_CARD_1BA = 0x5c;
|
|
REG_ROMCTRL = CARD_nRESET | CARD_SEC_SEED | CARD_SEC_EN | CARD_SEC_DAT;
|
|
|
|
// Update the DS card flags to suit KEY2 encryption
|
|
portFlagsKey1 |= CARD_SEC_EN | CARD_SEC_DAT;
|
|
|
|
// 1lllliii jjjkkkkk - 2nd Get ROM Chip ID / Get KEY2 Stream
|
|
createEncryptedCommand (CARD_CMD_SECURE_CHIPID, cmdData, 0);
|
|
|
|
if (normalChip) {
|
|
cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
|
|
cardDelay(ndsHeader->readTimeout);
|
|
}
|
|
cardPolledTransfer(portFlagsKey1 | CARD_BLK_SIZE(7), NULL, 0, cmdData);
|
|
|
|
// 2bbbbiii jjjkkkkk - Get Secure Area Block
|
|
portFlagsSecRead = (ndsHeader->cardControlBF & (CARD_CLK_SLOW|CARD_DELAY1(0x1FFF)|CARD_DELAY2(0x3F)))
|
|
| CARD_ACTIVATE | CARD_nRESET | CARD_SEC_EN | CARD_SEC_DAT;
|
|
|
|
int secureAreaOffset = 0;
|
|
for (secureBlockNumber = 4; secureBlockNumber < 8; secureBlockNumber++) {
|
|
createEncryptedCommand (CARD_CMD_SECURE_READ, cmdData, secureBlockNumber);
|
|
|
|
if (normalChip) {
|
|
cardPolledTransfer(portFlagsSecRead, NULL, 0, cmdData);
|
|
cardDelay(ndsHeader->readTimeout);
|
|
for (i = 8; i > 0; i--) {
|
|
cardPolledTransfer(portFlagsSecRead | CARD_BLK_SIZE(1), secureArea + secureAreaOffset, 0x200, cmdData);
|
|
secureAreaOffset += 0x200/sizeof(u32);
|
|
}
|
|
} else {
|
|
cardPolledTransfer(portFlagsSecRead | CARD_BLK_SIZE(4) | CARD_SEC_LARGE, secureArea + secureAreaOffset, 0x1000, cmdData);
|
|
secureAreaOffset += 0x1000/sizeof(u32);
|
|
}
|
|
}
|
|
|
|
// Alllliii jjjkkkkk - Enter Main Data Mode
|
|
createEncryptedCommand (CARD_CMD_DATA_MODE, cmdData, 0);
|
|
|
|
if (normalChip) {
|
|
cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
|
|
cardDelay(ndsHeader->readTimeout);
|
|
}
|
|
cardPolledTransfer(portFlagsKey1, NULL, 0, cmdData);
|
|
|
|
//CycloDS doesn't like the dsi secure area being decrypted
|
|
if((ndsHeader->arm9romOffset != 0x4000) || secureArea[0] || secureArea[1])
|
|
{
|
|
decryptSecureArea (gameCode->key, secureArea, 0);
|
|
}
|
|
|
|
if (secureArea[0] == 0x72636e65 /*'encr'*/ && secureArea[1] == 0x6a624f79 /*'yObj'*/) {
|
|
// Secure area exists, so just clear the tag
|
|
secureArea[0] = 0xe7ffdeff;
|
|
secureArea[1] = 0xe7ffdeff;
|
|
} else {
|
|
//return normalChip ? ERR_SEC_NORM : ERR_SEC_OTHR;
|
|
}
|
|
|
|
// Set NAND card section location variables
|
|
if (nandChip) {
|
|
if(ndsHeader->nandRomEnd != 0) {
|
|
// TWL cards (Face Training) multiply by 0x80000 instead of 0x20000
|
|
cardNandRomEnd = ndsHeader->nandRomEnd * (ndsHeader->unitCode == 0 ? 0x20000 : 0x80000);
|
|
cardNandRwStart = ndsHeader->nandRwStart * (ndsHeader->unitCode == 0 ? 0x20000 : 0x80000);
|
|
} else {
|
|
// Jam with the Band (J) (大合奏！バンドブラザーズ) doesn't have the RW section in the header
|
|
cardNandRomEnd = 0x7200000;
|
|
cardNandRwStart = 0x7200000;
|
|
}
|
|
}
|
|
|
|
return ERR_NONE;
|
|
}
|
|
|
|
void cardRead (u32 src, void* dest, bool nandSave)
|
|
{
|
|
sNDSHeaderExt* ndsHeader = (sNDSHeaderExt*)headerData;
|
|
|
|
if (src >= 0 && src < 0x1000) {
|
|
// Read header
|
|
tonccpy (dest, (u8*)headerData + src, 0x200);
|
|
return;
|
|
} else if (src < CARD_SECURE_AREA_OFFSET) {
|
|
toncset (dest, 0, 0x200);
|
|
return;
|
|
} else if (src < CARD_DATA_OFFSET) {
|
|
// Read data from secure area
|
|
tonccpy (dest, (u8*)secureArea + src - CARD_SECURE_AREA_OFFSET, 0x200);
|
|
return;
|
|
} else if ((ndsHeader->unitCode != 0) && (src >= ndsHeader->arm9iromOffset) && (src < ndsHeader->arm9iromOffset+CARD_SECURE_AREA_SIZE)) {
|
|
// Read data from secure area
|
|
tonccpy (dest, (u8*)secureArea + src - ndsHeader->arm9iromOffset, 0x200);
|
|
return;
|
|
}
|
|
|
|
if (nandChip) {
|
|
if ((src < cardNandRomEnd || !nandSave) && nandSection != -1) {
|
|
cardParamCommand(CARD_CMD_NAND_ROM_MODE, 0, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
nandSection = -1;
|
|
} else if (src >= cardNandRwStart && nandSection != (src - cardNandRwStart) / (128 << 10) && nandSave) {
|
|
if(nandSection != -1) // Need to switch back to ROM mode before switching to another RW section
|
|
cardParamCommand(CARD_CMD_NAND_ROM_MODE, 0, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
cardParamCommand(CARD_CMD_NAND_RW_MODE, src, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
nandSection = (src - cardNandRwStart) / (128 << 10);
|
|
}
|
|
}
|
|
|
|
cardParamCommand (CARD_CMD_DATA_READ, src,
|
|
portFlags | CARD_ACTIVATE | CARD_nRESET | CARD_BLK_SIZE(1),
|
|
dest, 0x200/sizeof(u32));
|
|
|
|
if (src > ndsHeader->romSize && !(nandSave && src >= cardNandRwStart)) {
|
|
switchToTwlBlowfish(ndsHeader);
|
|
}
|
|
}
|
|
|
|
// src must be a 0x800 byte array
|
|
void cardWriteNand (void* src, u32 dest)
|
|
{
|
|
if (dest < cardNandRwStart || !nandChip)
|
|
return;
|
|
|
|
if (nandSection != (dest - cardNandRwStart) / (128 << 10)) {
|
|
if(nandSection != -1) // Need to switch back to ROM mode before switching to another RW section
|
|
cardParamCommand(CARD_CMD_NAND_ROM_MODE, 0, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
cardParamCommand(CARD_CMD_NAND_RW_MODE, dest, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
nandSection = (dest - cardNandRwStart) / (128 << 10);
|
|
}
|
|
|
|
cardParamCommand(CARD_CMD_NAND_WRITE_ENABLE, 0, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
|
|
const u8 cmdData[8] = {0, 0, 0, dest, dest >> 8, dest >> 16, dest >> 24, CARD_CMD_NAND_WRITE_BUFFER};
|
|
for (int i = 0; i < 4; i++) {
|
|
cardPolledTransferWrite(portFlags | CARD_ACTIVATE | CARD_WR | CARD_nRESET | CARD_BLK_SIZE(1), src + (i * 0x200), 0x200 / sizeof(u32), cmdData);
|
|
}
|
|
|
|
cardParamCommand(CARD_CMD_NAND_COMMIT_BUFFER, 0, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
|
|
u32 status;
|
|
do {
|
|
cardParamCommand(CARD_CMD_NAND_READ_STATUS, 0, portFlags | CARD_ACTIVATE | CARD_nRESET | CARD_BLK_SIZE(7), &status, 1);
|
|
} while((status & BIT(5)) == 0);
|
|
|
|
cardParamCommand(CARD_CMD_NAND_DISCARD_BUFFER, 0, portFlags | CARD_ACTIVATE | CARD_nRESET, NULL, 0);
|
|
}
|